using ChatApi.Services.Classifier;
using MongoDB.Driver;

namespace ChatApi.Services.Bot.Structs
{
    public class ChatPersistence
    {
        private readonly IMongoCollection<ChatState> _collection;
        private string _botName;

        private ChatPersistence(DomvsDatabaseSettings config)
        {
            var client = new MongoClient(config.ConnectionString);
            var database = client.GetDatabase(config.DatabaseName);
            _collection = database.GetCollection<ChatState>(config.ChatBotRHCollectionName);
        }

        public static ChatPersistence Create(DomvsDatabaseSettings config)
        {
            return new ChatPersistence(config);
        }

        public ChatPersistence SetBotName(string botName)
        {
            _botName = botName;
            return this;
        }

        public ChatState GetState(string usuarioId)
        {
            return _collection.Find(x => x.UsuarioId == usuarioId).FirstOrDefault();
        }

        public void DeleteState(string usuarioId)
        {
            _collection.DeleteOne(x => x.UsuarioId == usuarioId);
        }

        public void SaveState(ChatState estado)
        {
            var filtro = Builders<ChatState>.Filter.Eq(x => x.UsuarioId, estado.UsuarioId);
            _collection.ReplaceOne(filtro, estado, new ReplaceOptions { IsUpsert = true });
        }
    }
}